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A kind of preparation method of vanadium bismuth red and application of vanadium bismuth red as pigment

A technology of reaction and metavanadic acid, applied in applications, chemical instruments and methods, vanadium compounds, etc., can solve the problems of unsatisfactory, single color, etc., and achieve the effect of good crushing performance, fine particle size, and good affinity

Active Publication Date: 2022-03-11
HUNAN SANFENG VANADIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] To sum up, at present, the main application form of bismuth vanadate is mainly the application form of yellow pigment, and the color is single, which cannot meet the current demand

Method used

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Examples

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Effect test

preparation example Construction

[0034] The invention provides a kind of preparation method of vanadium bismuth red, comprises the steps:

[0035] 1) bismuth nitrate, aluminum nitrate and molybdenum nitrate are dissolved in nitric acid solution to obtain metal nitrate mixed solution;

[0036] Ammonium sulfate, ammonium chloride and ammonium nitrate are dissolved in sulfuric acid solution to obtain ammonium salt mixed solution.

[0037] 2) dissolving ammonium metavanadate in NaOH solution, adjusting the pH value to 11-14 to obtain sodium metavanadate solution;

[0038] 3) the sodium metavanadate solution is left to cool to room temperature, and acid is added to adjust the pH value to 2 to 4 to obtain a sodium vanadate solution;

[0039] 4) heating the sodium vanadate solution to boiling, mixing with the ammonium salt mixed solution obtained in the step 1), heating up after the heat preservation reaction, and then mixing with the metal nitrate mixed solution obtained in the step 1), adding acid to adjust the ...

Embodiment 1

[0057] 1) Dissolving bismuth nitrate, aluminum nitrate and molybdenum nitrate in 10mol / L nitric acid solution to obtain a mixed metal nitrate whose concentration of bismuth nitrate, aluminum nitrate and molybdenum nitrate is 1mol / L, 0.1mol / L and 0.05mol / L respectively solution;

[0058] Ammonium sulfate, ammonium chloride and ammonium nitrate that mass ratio is 5:5:8 are dissolved in the sulfuric acid solution of 14mol / L, obtain NH 4 + The concentration is 6mol / L ammonium salt mixed solution.

[0059] 2) 100kg ammonium metavanadate is dissolved in the NaOH solution of 6mol / L, adjusts pH value to 11, obtains sodium vanadate solution;

[0060] 3) the sodium vanadate solution is left to cool to room temperature, and nitric acid is added to adjust the pH value to 2 to obtain metavanadate solution;

[0061] 4) The metavanadic acid solution was heated to 60°C, mixed with the ammonium salt mixed solution obtained in the step 1) according to a volume ratio of 1:0.25, and kept for 3...

Embodiment 2

[0064] 1) dissolving bismuth nitrate, aluminum nitrate and molybdenum nitrate in 12mol / L nitric acid solution, obtaining bismuth nitrate, aluminum nitrate and molybdenum nitrate concentration is respectively the metal nitrate of 1.5mol / L, 0.15mol / L and 0.1mol / L mixture;

[0065] Ammonium sulfate, ammonium chloride and ammonium nitrate that mass ratio is 5:4:10 are dissolved in the sulfuric acid solution of 16mol / L, obtain NH 4 + The concentration is 8mol / L ammonium salt mixed solution.

[0066] 2) 100kg ammonium metavanadate is dissolved in the NaOH solution of 8mol / L, adjusts pH value to 12, obtains sodium vanadate solution;

[0067] 3) the sodium vanadate solution is left to cool to room temperature, and nitric acid is added to adjust the pH value to 3 to obtain metavanadate solution;

[0068] 4) The metavanadic acid solution was heated to 80°C, mixed with the ammonium salt mixed solution obtained in the step 1) according to a volume ratio of 1:0.3, and kept for 60 minute...

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Abstract

The invention provides a method for preparing vanadium bismuth red, comprising the following steps: 1) preparing a metal nitrate mixed solution of bismuth nitrate, aluminum nitrate and molybdenum nitrate, and an ammonium salt mixed solution of ammonium sulfate, ammonium chloride and ammonium nitrate; 2) dissolving ammonium metavanadate in sodium hydroxide solution, adjusting the pH value, and preparing a sodium metavanadate solution; 3) cooling the sodium metavanadate solution to room temperature, adding acid to adjust the pH value, and obtaining vanadium sodium vanadate solution; 4) heating the sodium vanadate solution, mixing with the ammonium salt mixed solution obtained in the step 1), heating up after the heat preservation reaction, and then mixing with the metal nitrate mixed solution obtained in the step 1) , adding acid to adjust the pH value to 1-2, salting out reaction to obtain vanadium bismuth red. The core of the invention lies in the innovation of the process route and the optimization of the parameters, the process is simple, the raw materials do not contain polluting components, and has the characteristics of cleanness and environmental protection. The obtained vanadium bismuth red product is red, has strong coloring power, is environmentally friendly and non-toxic The advantages.

Description

technical field [0001] The invention relates to the technical field of inorganic pigment preparation, in particular to a preparation method of vanadium bismuth red and its application as a pigment. Background technique [0002] Bismuth vanadate is also known internationally as 184 yellow, bismuth yellow, molybdenum bismuth yellow, titanium bismuth yellow, and bismuth yellow 184. It was first successfully produced and developed by BASF in Germany, marking the birth of a new generation of environmentally friendly materials. [0003] There are four known lattice structures of bismuth vanadate, and the colors are different according to the lattice structure: [0004] 1. Tetragonal crystal, which is a scheelite-type crystal, can be used as a yellow pigment; [0005] 2. Tetragonal, zirconium silicate type crystal, very light yellow; [0006] 3. Orthorhombic crystal, which is a vanadate-type crystal, and the bismuth vanadate in nature is brown; [0007] 4. Monoclinic crystal can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/00C09D7/61C09D11/037
CPCC01G31/00C09D7/61C09D11/037C08K3/24C08K2003/282C08K3/28C01P2006/60
Inventor 许小弟田兴江
Owner HUNAN SANFENG VANADIUM IND CO LTD
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